Questions and Answers
What are chemical messengers responsible for?
Coordinating body functions
Which of the following is NOT a type of chemical messenger system?
Kinetic energy
What is the function of endocrine hormones?
To influence target cells at another location in the body through the blood
What do cytokines do?
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How do endocrine hormones travel to their target cells?
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Study Notes
- Chemical messengers coordinate body functions
- There are 6 types of chemical messenger systems
- Neurotransmitters act locally to control nerve cell functions
- Endocrine hormones influence target cells at another location in the body through the blood
- Neuroendocrine hormones are secreted by neurons into the blood
- Paracrines affect neighboring target cells of a different type
- Autocrines affect the same cells that produced them
- Cytokines are peptides that can function as autocrines, paracrines, or endocrine hormones
- Endocrine hormones are carried by the circulatory system to cells throughout the body
- Hormones can affect many different types of cells or specific target tissues
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